If you're looking for a better tool someone suggest this to me:

https://www.amazon.com/dp/B00E55DL4I/?coliid=I1OIQ77TDDUJJ0&colid=223C17QJAZ9L3&psc=0&ref_=lv_ov_lig_dp_it

My carb is set perfectly thanks to the last owner so I haven't needed this yet but several others have vouched for it.